[snakeeyes]

My understanding is that fix-a-flat-type sealants will eventually solidify inside the tire. That’s one of the reasons the directions tell you to drive on them immediately, I think. If you’ve ever used the stuff and gotten it on your hands, it turns to a gooey mess almost immediately and then dries on your skin like glue. Assuming the tire is driven a decent distance after it’s injected, in theory it should be evenly distributed inside, but I’ve used it a time or two and had the subject tire feel like it had lost a wheel weight. It can be hosed out when the tire is removed from the wheel, but of course if you drove any appreciable distance on the deflated tire (or if it picked up a nail or cut in the sidewall or too close to the sidewall) it may be ruined anyhow.